I suggest that you...

Please consider a feature where GoGuardian Admins for can accept new black list items added by other groups in a similar category.

Give an option in the blacklist to subscribe to a common blacklist environment, categories would include these examples: education grade school, education high school, education college, Business Corporate, Business Banking, whatever your clients typically are. Then allow Admins to join/subscribe to the group say Education Grade School. This group subscription would allow the subscriber to review blacklist items others in the collective have submitted to block and allow me as the admin to adopt the new item or opt out of for example: http://www.mp3cab.com

This gives an additional selling point for the product to help make our admin jobs a little easier by working as a collective in protecting students in this case. Furthermore we are all not recreating the wheel daily. Thank you very much for your consideration.